Not really, because he was just going to work and wasn't aware of what was happening in Gotham.
spoilers:
Batman was chasing men of Carmine Falcone's son I think. And Alfred called for help the other JLers but they were all busy elsewhere (you can see Superman being in Guatemala in the trailer). Barry gets his Fox's Quicksilver style of intro action scene and arrives late at work because Barry is always late lol. From what I know, the Tony/Peter dynamic you are worried about is more between the 2 Barrys than between Barry and Bruce. The 2 Barrys are the co-stars, Batfleck is an extended cameo in the film (2 scenes), BatKeaton and Super-Sasha appear in the last hour of the film and they are supporting characters (and cannon fodder ) It's more focused on Barry than the comic or animated Flashpoint |
end of spoilers
That cameo was taken so out of context like it was a CW-related homage, while it was really a Golden Age one.